I am adding on two subscribers at a remote campus to an existing CUCM cluster that resides at a main campus site. I am also adding on (2) Cisco 3925 routers at the remote campus for inbound/outbound call routing to the PSTN. Using Route List and Route Groups in the CUCM cluster, I have defined one of the gateways at the remote campus site as primary for outbound calls and one of the gateways at the main campus as a backup gateway to the PSTN. I have configured SIP trunks between the gateways and the CUCM cluster. (I have attached a very simple logical diagram).
I understand the configuration to all failover scenerios with the exception of one. If I lose all T1/PRI to the voice gateway at the remote campus, but still have network connectivity via SIP keepalives between the call manager and the voice gateway, how could I let call manager know to use the backup gateway at the main campus?
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.